% Epígrafe (citação seguida de indicação de autoria)

\chapter*{}
\vspace{15cm}
\begin{flushright}
  \textit
  {
    Computer programming is an art, because it applies accumulated\\
    knowledge to the world, because it requires skill and ingenuity,\\
    and especially because it produces objects of beauty.\\
    A programmer who subconsciously views himself as\\
    an artist will enjoy what he does and will do it better.
  }\medskip\\
  \vspace{0.8cm}
  Donald Ervin Knuth. \textit{Computer Programming as an Art}, 1974.
\end{flushright}